Chi chester



CL. S. OHIGHESTER.

GARVING MACHINE.

No. 8,141. Patented June 3, 1851.

L. SwCHICHESTER, or wILLiAMsBURoH, NEW YORK.

CARVING-MACI-IINE.

Specification of Letters Patent No. 8,141, dated J une 3, 1851. c

To all whom it may concern: j a

Be it known that I, LEWIS S. Cruorms'rnn, ofWilliamsburgh,in the county of Kings andState of New York, have invented: certain new and useful Improvements in Carving-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part ofthis specification, inwhich- Figure 1 isa front elevation of the machine; Fig. 2 a longitudinalvertical section,

and Fig. 3 a crossvertical section.

The same letters indicate like parts all the figures. i

a machine for carving-l by which articles may be carved not only the same size asthe pattern, but also of larger and smaller size, and in the same machine and at the same time and from the same pattern,

With this View my invention consists in the use of a pendent lever suspended from a ball and socket joint to the lower end of which is appended by another ball and.

socketjoint the movable table upon which the pattern and block to be carved are placed, when this is combined with a pointer, or tracer permanently fixed in the frameof the machine, and so arranged over the pattern and block that the pointer shall follow all the, sinuosities of the pattern, and at the same time, by means of its connection with the tracer, produce from the block of wood or other material on the table an exact counterpart of the pattern.

My invention also consists in combining by means of arms with the lever suspended from a ball and socket joint, the use of auxiliary balls working in accurately fitting spherical sockets, one on each side of the center of motion of the ball and socket joint for the purpose of preventing the lever from rotating or changing the position of its center of motion. The connections of the movable tables, upon which the carvingis done with the pendent lever is also effected in the same manner. And my invention also consists in combining with the pendent lever in the manner described or in any other equivalent manner any number of tables, eachcombined with a permanent cutting tool, by which means, in the same machine and at the same operation, different sized articles may be carved from one pattern, those to be smaller than the pattern being carved on a table nearer the center of The object of my invention is to produce In the accompanying drawingsc repre sents a frame composed of two standards connectedby an upper cross piece I) from which the lever c for operating the tables motion than thatfl upon which the pattern isplacedand combined with their tracer, and those which are tobe larger than the pattern". on gltables farther from the center of motion of the lever, but arranged and combined {with it in the same manner.

is suspended. The lever cworks by a ball and-socket joint (I; the'upper end 6 of the lever c is provided withtwo arms f, f, at

.right angles to-the lever anduwith their ends bent down, and each fitting into a small sphere g g which move freelyin spherical sockets inthe cross "piece Z). The object of this arrangement is to prevent the pendent lever c from vibrating on its axis or on any line passing through the center of its motion. The movabletable h, is attachedto the lower end of the lever c by an arrange- ,ment like thatcjust described and is so adusted as to rest constantlyon four or more standards 2' which form a bed upon which it is moved. This table is operated by means 7 of a lever j attached to it and to a crank arm 76. v i Y j The traces m, and cutter n are arranged respectively in side pieces 0 and p, attached to the vertical sides of the main frame by pins 9, and screw nuts 1', so as to admit of play up and down in the slots 8. The lower ends of these side pieces 0, p, are connected with a treadle t by which they are operated to guide the pointer over the irregularities and sinuosities of the pattern. The tracer m, and cutter n, are arranged respectively in the arms a, u, of the side pieces 0 p, and areeach provided with a small pulley o to which a rapidmotion is com-l municated from any first mover.

By the arrangement which has been described, by means of the handlever j the table containing the block and pattern is operated, the pattern being moved under the tracer, while the latter moves over every point of its surface, being operated by means of the treadle. The same motions which are communicated to the tracer, being 7 also by means of the arrangement communicated to the cutter, and as both the tracer and cutter are operating at the same distance from the center of motion 'of the pendent lever it follows that the articles produced will not only be precisely similarto the patterns but will also be exactly equal to it in every dimension.

If it be desired to produce from a given pattern a carving precisely similar to it but of smaller proportions, the pattern is placed under the tracer on the lower table and the block from which the carving is to be produced under the cutter n. which is connected with the pendent lever 0 and the upper table it precisely as has been described of the lower table, the same mode of combining. the table and lever 0 being also employed. The relative proportion which is to exist between the pattern and the carving to be produced must determine the distance which the table it is to be from tracer and cutter always bearing against the pattern and block respectively.

It will be obvious that large carvings can be produced by this machine from small patterns as well as small carvings from large patterns, and that both large and small carvings may be produced from any pattern in one machine at the same time.

Vhat I claim as my invention and desire to secure by Letters Patent is 1. The use of the pendent lever suspended from a ball and socket joint in combination with a horizontal table for the pattern and block, the said table being affixed to the end of the pendent lever by a ball and socket joint, the whole being arranged with respect to the tracer and cutter, substantially in the manner and for the purpose described.

2. I also claim preventing the pendent lever from changing its center of motion or from rotating on its own axis or on any line passing through the center of its motion by the use of the bent arms working in balls in spherical sockets, substantially as described.

3. I also claim combining with the pendent lever two or more tables, substantially in the manner described or in any other sub stantially the same, and arranged each with a tracer and cutter respectively, in order that large carvings may be obtained from a small pattern, or vice versa, or both at the same time and with the same machine sub stantially as described.

LEWVIS S. CHICHESTER.

Witnesses: I

ALEX. PORTER BROWNE, WM. BIsHoP. 

